DigitalPersona and Windows 7 Upgrade

The preinstalled version of DigitalPersona (3.1 I believe, 32-bit) already on my Studio 1737 laptop worked great when I had the original vista OS. But, after needing a new hard drive and upgrading to Windows 7, the installation disk for my DigitalPersona software no longer works because I installed the 64-bit Windows 7.

Do I need to now purchase the new 64-bit version from DigitalPersona, or can Dell send me a updated install disk?